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Valve selection


High Performance

Type 441, 442 DIN DN 20 - 200 
  Type 441, 442 ANSI NPS 1" - 4" 
  Type 441, 442 XXL DN 200 - 400 
  Type 441, 442 Full nozzle DIN DN 25 - 50 
  Type 441, 442 Full nozzle ANSI NPS 1'' - 4'' 
  Type 444 DIN DN 25 - 80 
  Type 444 ANSI NPS 1'' - 3'' 
  Type 455, 456 DN 25 - 100, NPS 1" - 4" 
  Type 457, 458 DN 25 - 150, NPS 1" - 6" 

API Series

Type 526 NPS 1" - 8", Orifice D - T 

Compact Performance

Type 437 do 6 - 10 mm 
  Type 438 do 10 mm 
  Type 439 do 10 mm 
  Type 459 do 9 - 17,5 mm 
  Type 459 HDD do 6 - 13 mm 
  Type 462 do 9 - 17,5 mm 
  Type 462 HDD do 9- 13 mm 

Clean Service

Type 481 do 10 
  Type 483 do 13 - 25mm 
  Type 484 do 13 - 25mm 
  Type 485 do 13 - 25mm 
  Type 488 do 23 - 92mm 

Critical Service

Type 546 DN 25 - 100 
  Type 5466 DN 25 - 50 
  Type 447 DN 25 - 100, NPS 1" - 4" 
  Type 449 DN 25 - 100, NPS 1" - 4" 

Modulate Action

Type 427, 429 DN 15 - 150 
  Type 431, 433 DN 15 - 150 
  Type 431, 433 PN 160, DN 15 

S&R - Safety Valves for special or regional Application


Best Availability

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LESER safety valve
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